STOCKTHINK

The why behind every move
Analyze your games
brilliantgreatbestexcellentgoodbookinaccuracymistakemissblunderbrilliantgreatbestexcellentgoodbookinaccuracymistakemissblunder

The “why”
behind every Stockfish move.

Open source · runs in your browser

Built by Malik Abuallatta — to make you go “ohhh.”

Step 01

Get your game ready.

Paste a PGN from anywhere — chess.com, Lichess, or your own board — then hit analyse. Stockfish 18 spins up right on your machine. No server, no waiting on anyone else.

Paste PGN
Cut
Copy
Paste
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0% Game analysed
Starting engines…
Step 02

Or just connect chess.com

Link your account and StockThink pulls in your game history — then pick any game and review it in one click. Yours, a rival’s, or a streamer’s.

M
MalikAhedMalik Abuallatta
1382 1455 1604
June 202612 games
MalikAhed(1604)vsd_petrov(1588)
2 days ago · 41 moves · Won by checkmate · 88% acc
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a_navarro(1497)vsMalikAhed(1471)
4 days ago · 28 moves · Lost on time · 79% acc
−
MalikAhed(1596)vskk_lindq(1610)
Last week · 53 moves · Draw by repetition · 84% acc
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s_okoye(1442)vsMalikAhed(1450)
Last week · 19 moves · Won by resignation · 81% acc
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Select games to analyse
Step 03

Learn from your mistakes.

Every move gets reviewed — your slips named in plain words, then the stronger move you missed is shown right on the board.

your game · review
Review
miss Miss Queenf3
Following the moves… Analysing…
Moves
Eval history
Every day

Improve with the Stockfish that talks.

xe4Best move Why: wins a clean central pawn. Castle early — king safety first. xh2??Blunder Why: the queen is lost to Kxh2. g5Good move Why: pins the knight to the queen. Rooks belong on open files. xf7!Brilliant Why: a rook sac that cracks the king open.
How StockThink works

Stockfish that talks.?

Three things happen the moment you hit analyse.
01 / 03

The strongest engine — right in your browser.

Stockfish 18 — the engine that outplays every grandmaster — runs entirely on your device. No servers, no uploads. Your games never leave your machine.

your device · offline
Calculating…
bestNxf7
1depth 0nodes
bestNxf7
Explanation
best Best move KnightNxf7
Moves
13g5d5
14exd5xd5
02 / 03

How we process Stockfish’s output.

03 / 03
A coach that studies
while you sleep.
Every night it gets a little better at explaining your game.
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